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The Power of Movement in Plants
Charles Darwin and Sir Francis Darwin
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More Letters of Charles Darwin — Volume 1
Charles Darwin
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Metabolic Adaptation to Climate and Distribution of the Raccoon Procyon Lotor and Other Procyonidae
John N. Mugaas, John Seidensticker, and Kathleen P. Mahlke-Johnson
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North American Recent Soft-Shelled Turtles (Family Trionychidae)
Robert G. Webb
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The Variation of Animals and Plants Under Domestication, Vol. I.
Charles Darwin
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On the Origin of Species by Means of Natural Selection
Charles Darwin
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Parasites: A Treatise on the Entozoa of Man and Animals
T. Spencer Cobbold
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Ideen zu einer Physiognomik der Gewächse (German)
Alexander von Humboldt
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A Guide to the Study of Fishes, Volume 2 (of 2)
David Starr Jordan
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The Wonders of Instinct: Chapters in the Psychology of Insects
Jean-Henri Fabre
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Sex-linked Inheritance in Drosophila
Thomas Hunt Morgan and Calvin B. Bridges
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More Letters of Charles Darwin — Volume 2
Charles Darwin
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Vertebrates from the Barrier Island of Tamaulipas, México
Richard F. Johnston, Robert K. Selander, B. J. Wilks, and Gerald G. Raun
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Species Plantarum, Sections I-III (Latin)
Carl von Linné
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Ways of Nature
John Burroughs
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Darwinism (1889)
Alfred Russel Wallace
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Pioneers of Evolution from Thales to Huxley
Edward Clodd
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Fungi: Their Nature and Uses
M. C. Cooke
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The Elements of Botany, For Beginners and For Schools
Asa Gray
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The Cambridge natural history, Vol. 03 (of 10)
A. H. Cooke and F. R. C. Reed
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The Descent of Man and Selection in Relation to Sex, Vol. II (1st Edition)
Charles Darwin
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The Variation of Animals and Plants under Domestication
Charles Darwin
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Versuche über Pflanzenhybriden (German)
Gregor Mendel
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Evidence as to Man's Place in Nature
Thomas Henry Huxley
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Animals of the Past
Frederic A. Lucas
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